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Vol. 31 No. 5 (2019): Vol 31 Issue 5

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Effect of Magnetic Treatment on Temporary Hardness of Groundwater

https://doi.org/10.14233/ajchem.2019.21779
Abdulaziz Ali Alomari
Chemistry Department, Faculty of Science and Arts, Mukwah, Albaha University, Albaha, Saudi Arabia

Corresponding Author(s) : Abdulaziz Ali Alomari

abomaz1389@yahoo.com

Asian Journal of Chemistry, Vol. 31 No. 5 (2019): Vol 31 Issue 5

Abstract

The magnetic treatment devices for water have been in use for scale prevention several decades ago. Although, the effect of magnetic treatment on the chemical and physical properties of water is not fully understood and needs to make a lot of research effort to be clarified. This work aims to investigate the effect of the magnetic treatment on the temporary hardness of the groundwater. A sample of groundwater was passed twice under the influence of perpendicular magnetic strength 0.5 Tesla with a flow rate of 10 L/h. The temporary and permanent hardness as well as scale formation test were measured before and after the magnetic treatment. The scale was analyzed by XRD and SEM techniques. The temporary hardness and the weight of scales were reduced after the magnetic treatment by 39.1 and 22.3 %, respectively. The decrease of temporary hardness after the magnetic treatment of groundwater may be attributed to that the magnetic field reduces both the dissolved CO2 content and surface tension, both of which reduce the amount of temporary hardness. The SEM micrographs illustrate that the magnetic treatment modified the shape and size of crystals of CaCO3 scales to prevent its adhesion to the substrate forming hard scales. The XRD patterns prove that the magnetic treatment of groundwater enhances the crystallization of amorphous CaCO3 favouring the formation of calcite.

Keywords

Groundwater Magnetic treatment CaCO3 scales Temporary hardness XRD SEM Aragonite Calcite
Alomari, A. A. (2019). Effect of Magnetic Treatment on Temporary Hardness of Groundwater. Asian Journal of Chemistry, 31(5), 1017–1021. https://doi.org/10.14233/ajchem.2019.21779
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